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8981023 Supported nonmetallocene catalyst, preparation and use thereof  
This invention relates to a supported nonmetallocene catalyst and preparation thereof. The supported nonmetallocene catalyst can be produced with a simple and feasible process and is characterized...
8957169 Supported nonmetallocene catalyst, preparation and use thereof  
This invention relates to a supported nonmetallocene catalyst and preparation thereof. The supported nonmetallocene catalyst can be produced with a simple and feasible process and is characterized...
8952112 Supported nonmetallocene catalyst, preparation and use thereof  
This invention relates to a supported nonmetallocene catalyst and preparation thereof. The supported nonmetallocene catalyst can be produced with a simple and feasible process and is characterized...
8952113 Supported nonmetallocene catalyst, preparation and use thereof  
This invention relates to a supported nonmetallocene catalyst and preparation thereof. The supported nonmetallocene catalyst can be produced with a simple and feasible process and is characterized...
8946368 Catalytic systems made of a complex of rare earths for stereospecific polymerisation of conjugated dienes  
The present invention relates to a multi-component catalytic system that can be used for the cis-1,4 stereospecific polymerization of conjugated dienes. The system is based on: (i) a rare-earth...
8933175 Hyperbranched polymers and methods of making and using same  
A composition comprising a polyethylene wherein the composition is enriched in polymer molecules having topological variations by an enrichment factor ω and wherein the composition displays a long...
8907030 Ethylene/alpha-olefin interpolymer suitable for use in fiber applications, and fibers made therefrom  
The instant invention provides an ethylene/alpha-olefin interpolymer suitable for use in fiber applications, and fibers made therefrom. The ethylene/alpha-olefin interpolymer according to the...
8907029 Catalyst for high temperature olefin polymerization  
An olefin polymerization catalyst is prepared by (a) in a diluent, combining a diorganomagnesium compound with less than 2 molar equivalents of a first source of chloride to produce a “chloride...
8728970 Catalyst component for the polymerization of olefins  
A solid catalyst component comprising the product of a process comprising (a) reacting a magnesium alcoholate of formula Mg(OR1)(OR2) compound, in which R1 and R2 are identical or different and...
8716417 Olefin polymerization catalyst and preparation method and use thereof  
An olefin polymerization catalyst and preparation method and use thereof are provided. The components of the catalyst comprise an active magnesium halide, a titanium compound containing at least...
8648161 Polyacrylic acid (salt) -based water-absorbent resin and a method for producing it  
The purpose of the present invention is to improve the water absorption of a water-absorbent resin without sacrificing the productivity, production cost, safety, and so on. Provided is a...
8604144 Procatalyst composition with substituted amide ester internal electron donor  
Disclosed are procatalyst compositions having an internal electron donor which includes a substituted amide ester and optionally an electron donor component. Ziegler-Natta catalyst compositions...
8592535 Ziegler-natta catalyst systems and polymers formed therefrom  
Processes of forming catalyst systems, catalyst systems and polymers formed therefrom are described herein. The processes generally include providing a first compound including a magnesium...
8497334 Conjugated diene polymer, conjugated diene polymer composition, and method for producing conjugated diene polymer  
A conjugated diene polymer comprising a constitutional unit based on a conjugated diene and a constitutional unit based on a compound represented by Formula (1) below, R1Si(OR2)mR3nR4(3-m-n) (1)...
8476395 Polypropylene composition with improved optics for film and moulding applications  
The present invention relates to a polypropylene composition comprising a propylene homopolymer or a propylene random copolymer having at least one comonomer selected from alpha-olefins with 2 or...
8476391 Anionic water-in-water polymer dispersion, method for the production thereof and its use  
The invention relates to a method for producing anionic water-in-water polymer dispersions containing at least one finely dispersed, water-soluble and/or water-swellable polymer A and a continuous...
8470941 Catalyst for homopolymerizing and copolymerizing propylene and its preparation and use  
A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two...
8431658 Process for feeding a catalyst in a polymerization reactor  
A process for introducing a catalyst powder based on a titanium compound supported on magnesium halide into a gas-phase olefin polymerization reactor, characterized in that it comprises: (a)...
8404789 Olefin polymerization catalyst and preparation method and use thereof  
An olefin polymerization catalyst and preparation method and use thereof are provided. The catalyst component comprises (1) an active magnesium halide, (2) a titanium compound containing at least...
8399374 Catalyst particles  
The present invention relates to novel and unique catalyst particles, a method for preparing same, the use of the catalyst particles for polymerization reactions and methods of controlling the...
8367745 Dental composite resin for core build-up  
To provide a dual curing type composite resin for core build-up having improved curing property by chemical polymerization with improved mechanical strength of a cured body under the condition of...
8283424 Process for the synthesis of alpha-olefin polymerization procatalysts  
The invention relates to a process for the synthesis of a Ziegler Natta procatalyst, the process comprising first treating magnesium alkoxide with a twice used mixed solvent of TiCl4 and...
8206654 Catalyst feed systems and methods for using the same  
Catalyst feed systems and processes utilizing such systems are described herein. Some embodiments disclosed herein relate to a process for improving the flowability of catalyst in a catalyst feed...
8193288 Supported nonmetallocene catalyst and preparation thereof  
This invention relates to a supported nonmetallocene catalyst for olefin polymerization, which is produced by directly reacting a nonmetallocene ligand with a catalytically active metallic...
8173755 Ultra high molecular weight ethylene copolymer powder  
The present invention relates to an ultrahigh-molecular-weight ethylene copolymer powder having an intrinsic viscosity (η) of 10 dl/g to 34 dl/g, obtainable by copolymerizing ethylene and at least...
8173569 Robust spray-dried ziegler-natta procatalyst and polymerization process employing same  
A Ziegler-Natta procatalyst composition in the form of solid particles and comprising magnesium, halide and transition metal moieties, said particles having an average size (D50) of from 10 to 70...
8012903 Methods to prepare catalyst compositions comprising small silica support materials  
Methods are provided to prepare a catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator...
7943717 Butene-1 copolymers and process for their preparation  
The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios...
7897710 Bimodal polyethylene film  
Film formed from a polyethylene resin composition which obeys a dynamic rheological relationship at 190° C. between melt storage modulus G′, measured in Pa and at a dynamic frequency where the...
7875350 Ethylene polymer particle having specific intrinsic viscosity and crystallinity, production method thereof and molded article using the same  
Ethylene polymer particles having an intrinsic viscosity [η] of 5 dl/g to 30 dl/g, a degree of crystallinity of as high as 80% or more, and a specific shape on the surface of the particles. The...
7816562 Amido-organoborate initiator systems  
The invention is amido-borate compounds containing one or more anionic amido-borate moieties comprising an organoborate anion wherein the boron atom is bonded to a nitrogen atom of ammonia or an...
7776986 Butene-1 (Co)Polymers having low isotacticity  
Butene-1 (co)polymers characterized by the following properties: content of butene-1 units in the form of isotactic pentads (mmmm) from 25 to 55%;intrinsic viscosity [η] measured in tetraline at...
7754833 Process for polymerization or copolymerization of ethylene  
Provided is a process for polymerization and copolymerization of ethylene, specifically comprising carrying out polymerization or copolymerization ethylene in the presence of (a) a solid complex...
7737241 Amido-organoborate initiator systems  
The invention is a system for initiating free radical polymerization comprising: a) in one part, one or more amido-borate compounds containing one or more anionic amido-borate moieties comprising...
7655590 Ziegler-Natta catalyst for particle size control  
Catalyst components, methods of forming catalyst compositions, polymerization processes utilizing the catalyst compositions and polymers formed thereby are described herein. The methods generally...
7649063 Supported metal alkyl compound and its preparation  
Pulverulent solid which consists essentially of at least one metal alkyl compound bound chemically and/or physically to a finely divided, porous, mechanically stable and chemically inert support,...
7629423 Alkene-acrylate-norbornene terpolymer and method for preparing the same  
The present invention provides method of preparing alkene-acrylate-norbornene terpolymer by polymerization of a monomer mixture consisting of alkene, acrylate and norbornene by a radical initiator...
7601787 Ethylene polymerization process  
A process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a Ziegler-Natta catalyst system in two slurry reaction zones. Most of the polyethylene (70-95...
7601423 Ethylene-based polymer microparticles, functional group-containing ethylene-based polymer microparticles, and catalyst carriers for manufacture thereof  
Ethylene-based copolymer microparticles and functional group-containing ethylene-based copolymer microparticles that have particle diameter smaller than that of conventional polyethylene...
7465775 Process for the production of polypropylene using high yield Ziegler-Natta catalysts  
This invention relates to a process for the production of a polymer film or fibre wherein a polymer composition comprising a propylene homo- or copolymer is formed into a film or fibre, and...
7439313 Magnesium dichloride-ethanol adducts and catalyst components obtained therefrom  
A MgCl2.mEtOH.nH2O adducts, where 3.4
7427653 Catalyst components for the polymerization of olefins  
A catalyst component for olefin (co)polymerization, and in particular for the preparation of LLDPE, comprising Mg, Ti, halogen and an electron donor compound (ED) belonging to ethers, esters,...
7381780 Catalyst compositions comprising small silica support materials and methods of use in polymerization reactions  
Improved catalyst compositions, and polymerization processes using such improved catalyst compositions, are provided. An example of an improved catalyst composition is a supported catalyst system...
7365138 Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use  
A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst...
7307036 Highly active alpha-olefin polymerization catalyst  
A highly active alpha-olefin polymerization catalyst component is disclosed. In the presence of a co-catalyst, the catalyst component is useful for the production of LLDPE resins. The catalyst...
7235615 Synthetic polymers with highly-functionalized liquid-rubber chain-end moieties  
A method is provided for synthesizing a polymer that has highly-functionalized chain-end moieties. The method functionalizes liquid rubber to terminate a metallic or organometallic initiated...
7220694 Magnesium compound, olefin polymerization catalyst, and method for producing olefin polymer  
The invention relates to a magnesium compound effective in producing olefin polymers having an increased bulk density and a narrowed particle size distribution, not lowering the stereospecificity...
7202191 Polymerization catalyst system using n-butylmethyldimethoxysilane for preparation of polypropylene film grade resins  
It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films...
7196152 Modified Ziegler catalyst, process for preparing it and process for preparing poly-1-olefins in its presence  
The invention relates to a modified Ziegler catalyst for preparing a poly-1-olefin in suspension, in solution or in the gas phase, which catalyst comprises the reaction product of a magnesium...
7169871 Propylene polymers  
The present invention relates to propylene polymers made by using catalyst components for the polymerization of olefins comprising Mg, Ti, halogen and at least two electron donor compounds, said...

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